Zoning in Marlborough

14 zoning codes on the assessor file.

Zone	Parcels	Median lot	Main use
A3	3,065	0.27 ac	Single Family Residential
A1	1,710	0.58 ac	Single Family Residential
A2	1,338	0.48 ac	Single Family Residential
RB	1,200	0.17 ac	Single Family Residential
RR	1,014	1.09 ac	Single Family Residential
RC	520	0.17 ac	Two-Family Residential
B	467	0.28 ac	Single Family Residential
LI	249	2.54 ac	Undevelopable Industrial Land
MV	150	0.14 ac	Vacant, Selectmen or City Council (Municipal)
I	126	2.94 ac	Buildings for manufacturing operations
CA	83	0.41 ac	Auto Repair Facilities
EROD	4	10.8 ac	IMPUTED - Apartments with More than Eight Units
NB	1	0.42 ac	Apartments with More than Eight Units
MJ	1	1.06 ac	Discount Stores, Junior Department Stores, Department Stores

Zoning codes as written on the assessor file; the zoning bylaw and map of the town are the reference. All towns.